The Rule of 72 Do you know how long it may take for your investments to double in value? The Rule of 72 is a quick way to figure it out. Share | Related Content Jane Bond: Decoding Diversification Agent Jane Bond is on the case, discovering how bonds diversify a portfolio. All Under One Roof Consolidating your assets onto one platform can reap multiple benefits. 5 Smart Investing Strategies Getting what you want out of your money may require the right game plan.